Valve, Check4820-01-478-4650

NSN 4820-01-478-4650 · NIIN 014784650 · Part number N20954A

Haldex Brake Products Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 06721

Government record, cited

NSN 4820-01-478-4650 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-478-4650. Manufacturer of record part number: N20954A.

Also searched as 4820-01-478-4650 · 4820014784650 · NIIN 014784650 · 01-478-4650 · FSC 4820 Valves, Nonpowered · CAGE 06721 · N20954A

Nearby stock numbers ← 4820-01-478-4577 · 4820-01-478-4661 Valve, Globe →

4820-01-478-4650 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Nominal Length: 2.390 INCHES ALL ENDS IN
Style Designator: STRAIGHT THRU
Nominal Width: 2.240 INCHES ALL ENDS IN
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Haldex Brake Products Corporation

Identification

NSN: 4820-01-478-4650
NIIN: 014784650
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: N20954A
Manufacturer: Haldex Brake Products Corporation

General Description

The Valve,check, cataloged under National Stock Number 4820-01-478-4650, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Haldex Brake Products Corporation. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-478-4650
Primary Part Number	N20954A
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Haldex Brake Products Corporation
Status	ACTIVE
Nominal Length	2.390 INCHES ALL ENDS IN
Style Designator	STRAIGHT THRU
Nominal Width	2.240 INCHES ALL ENDS IN
Valve Operation Method	AUTOMATIC

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
N20954A PRIMARY	Haldex Brake Products Corporation (USA)

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-478-4650?

NSN 4820-01-478-4650 is a Valve,check, manufactured by Haldex Brake Products Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-478-4650?

NSN 4820-01-478-4650 has 1 manufacturer part number on file: N20954A (Haldex Brake Products Corporation).

What are the specifications of N20954A?

Key specifications for N20954A: Nominal Length: 2.390 INCHES ALL ENDS IN; Style Designator: STRAIGHT THRU; Special Features: VALVE SIZE 3/8IN IN; Nominal Width: 2.240 INCHES ALL ENDS IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-478-4650 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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